First Trimester During Pregnancy

In just four weeks, the heart, brain, and spinal cord begin to form. Major organs like the stomach and intestines are already forming, as well as the eyes and ears.

The first trimester is a period of tremendous growth. Within 6 weeks, the unborn child’s heart is beating and brain activity can be recorded.

In 8 weeks, all the major organs have begun to develop. The unborn child’s facial features become recognizable, including the nose, lips, and tongue. After 10 weeks, the unborn child has enough muscle control to make its hand into a fist.

​By the close of the first trimester, all of the organs and body parts have been formed, including the nerve fibers that transmit pain signals to the brain.